Bowl for clarifying fluids



April 24,1934. J. G. DEGE RTH BOWL FOR CLARIFYING FLUIDS Filed March 18, 1933 Patented Apr. 24, 1934 PATENT oFFicE 1,956,496 BOWL FOR CLARIFYING FLUI DS John Gustaf Degerth, Helsingfors, Finland, assignor to Maskin-Och Brobyggnads Aktiebolage Helsingfors, Finland Application March 18, 1933, Serial No. 661,638 In Germany March 23, 1932 6 Claims.

This'inverition relates to a centrifugal clarifying or filtering bowl which may be used for clarifying or filtering variousfiuids.

The principal object of the invention is the provision of a device of the indicated character which embodies cylindrical pr tubular walls form- .ing -a tortuous fluid passage, and which utilizes :a filtering .material, such as cloth or membrane, stretched or secured in place in zigzag fashion 10 so as to furnish a maximum filtering means within a comparatively limited space, to thereby increase the capacity and efficiency of the device.

A further object of the invention is the provision of a device of the indicated character embodying improved features whereby the parts may be readily separated or detached to render other parts conveniently accessible so that they may be quickly cleaned whenever the occasions arise.

The drawing shows an example of such a clarifier bowl in section.

In the drawing it indicates the bowl itself which in its centre is equipped with a cylindrical socket b extending from the bottom upwards and intended for the insertion of the bearing and the which is extended parallelly to the bottom of the bowl and is connected with a cylinder d at the bottom of the bowl. The cylinder b with flange Lo and cylinder at is a separate centre or feed pipe. The lower part of the flange 0 possesses channels e opposite the bottom of the bowl. On the flange c,approximately in its centre,another cylinder 1 is provided on the circumference of which a number of openings g is arranged at various heights. The outer edge of the bowl a is furnished with another cylindrical part h which is equipped with contrivances for fastening a membrane 1'. The parts enumerated above can be made of a single piece, as shown in the drawing, but they can also consist of several parts rigidly connected with each other. At the outer edge the bowl cover k is equipped with a flange which rests on the bowl a and which can contain suitable gaskets for tightening the bowl. Further the cover is fitted with cylinders m and 11. extending downto wards near the flange c. The cylinders can be made either of one piece with the cover or can be rigidly fastened to the cover, and contain openings 0 p respectively. The upper end of the cylindrical part I), connected with the bowl, is also furnished with contrivances for fastening a membrane to same. The wall n can be equipped with another tranversal perforated flange q. At the upper part of the cover openings r are provided, through which the clarified fluid leaves the bowl.

If the fluid is to be filtered, a circular mem- 6o brane 2', preferably, consisting of a single piece and provided inside with an opening, is fastened at its outer edge to the cylindrical part h, while the part at the inner opening is connected with the cylinder 2). When the cover is placed on the 65 bowl the membrane i will be stretched funnelshaped and assumes the shape as is shown in the drawing. The fluid enters the bowl in this case also throughthe cylindrical part b and rises at first, in the way mentioned above, in the innermost chamberof the bowl. Hence the greater part of the fluid passes through the successive filter layers and through the openings 0, y and p in the cylindrical wall. Part of the fluid can also fiow from the outer chamber of the bowl round the filters, but must at any rate, prior to leaving the bowl, pass through the innermost funnel of the filter. The construction of the appliance can vary. For instance the number of the cylindrical walls g, m, n, with which the bowl and the cover 0' are fitted, respectively is optional and depends on the fluid to be cleaned and the required degree of efficiency of the clarification.

The height of the cylindrical walls is preferably such that same almost reach the opposite 5 bottom. The distance from this bottom also depends on the nature of the fluid to be treated.

I claim:

1. A separator comprising a hollow body having a fluid inlet and a fluid outlet, an arrangement of spaced perforated walls within said body and forming a tortuous fluid passage therein extending between the inlet and outlet in communication therewith, and filtering material secured in place to extend zigzagwise within said body 5 to filter the fluid flowing through said passage from said inlet to said outlet.

2. A fluid clarifying device comprising a hollow body of separate parts detachably fastened together, said body having fluid inlet and outlet means, one of said parts having spaced tubular walls extending perpendicularly therefrom and having adjacent edges thereof spaced from the other of said body parts, and said last body part having spaced tubular walls extending perpendicularly therefrom, and having adjacent edges thereof spaced from the first body part, and interposed with respect to said first walls, said Walls thus arranged forming a tortuous fluid no passage between said inlet and outlet means in communication therewith.

3. A separator comprising a bowl having a removable cover, said bowl having fluid inlet means extending from the bottom thereof through said cover, upstanding annular bafiie walls on said bottom of the bowl and the upper edges thereof terminating below the cover in spaced relation thereto, depending annular baflie walls on said cover and the lower edges thereof terminating above said bottom of the bowl in spaced.

relation thereto, said baffles being arranged in spaced relation to each other to form a tortuous passage communicating at one end with saidinlet means, and said cover having an outlet communicating with remaining end of said passage.

4. A separator comprising a bowl having a removable cover, said bowl having fluid inlet means extending from the bottom thereof through said cover, upstanding annular walls on said bottom of the bowl and the upper edges thereof terminating below the cover in spaced relation thereto, depending annular Walls on said'cover and the lower edges thereof terminating above said bottom of the bowl in spaced relation thereto, said Walls being arranged in spaced relation to each other to form a tortuous passage oommunicating at one end with said inlet means, said cover having an outlet communicating with remaining end of said passage, andflltering'material secured to said bowl and supported by the edges of said walls to filter the fluid flowing through said passage from the inlet means to said outlet, said walls being apertured to allow the fluid to flow therethrough.

5. A fluid clarifying device comprising a bowl having a central fluid inlet and passages whose inner ends communicate with the lower end of said inlet and which extend radially outward and terminate within the bowlfa'r'emovabl cover for the bpvgl, said cover having a fluid outlet, and a piece of filtering material held in place zigzagwise within said bowl to filter the fluid as it flows from said passages to said outlet.

6. A fluid'clarifying device comprising a hollow'body of separate parts detachably fastened together"; said'body having fluid inlet and outlet means, one "of said parts having spaced tubular the outlet means.

JOHN GUSTAF a age; 

